From VEX Wiki
Force x Wheel radius = Torque Force directed in a circle is called torque. Torque is a spinning force; however in the instance of a wheel, this spinning force creates a linear force at its edge. This is how we define torque, as a linear force at the edge of a circle. Torque is described by the magnitude of the force multiplied by the distance it is from the center of rotation (Force x Distance = Torque). Torque is measured commonly in units of inch-pounds and newton-meters.
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